#42408F#42408F

#42408F is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.8% C 0.127 H 280.5°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#42408F
RGB	rgb(66, 64, 143)
HSL	hsl(242, 38%, 41%)
HSV	hsv(242, 55%, 56%)
CMYK	cmyk(53.8%, 55.2%, 0%, 43.9%)
CIE-LAB	lab(31.37, 24.05, -43.71)
CIE-LCH	lch(31.37, 49.88, 298.82°)
OKLab	oklab(41.8% 0.0232 -0.1249)
OKLCH	oklch(41.8% 0.127 280.5)
XYZ	xyz(9.0366, 6.8077, 26.8191)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42408F #8D8F40

analogous

#40658F #42408F #69408F

triadic

#42408F #8F4240 #408F42

tetradic

#42408F #8F4065 #8D8F40 #408F69

square

#42408F #8F4065 #8D8F40 #408F69

split-complementary

#42408F #8F6940 #658F40

monochromatic

#1B1A3A #2E2D65 #42408F #5A58B4 #8482C7

Accessibility & contrast

On white

8.89

#42408F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#42408F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42408F

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42408F	#FFFFFF	#000000	##FFFFFF
##42408F	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124D92

Deuteranopia (green-blind)

#05478D

Tritanopia (blue-blind)

#215261

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #42408f;
/* rgb */ color: rgb(66, 64, 143);
/* oklch */ color: oklch(41.8% 0.127 280.5);

Tailwind

colors: {
  custom: {
    50: '#7d75b0',
    500: '#42408f',
    950: '#000000',
  },
}

SCSS

$custom: #42408f;
$custom-light: #7d75b0;
$custom-dark: #000000;

JSON

{
  "hex": "#42408f",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 143
  },
  "hsl": {
    "h": 241.519,
    "s": 38.164,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41795,
    "c": 0.12704,
    "h": 280.5
  },
  "luminance": 0.06808
}

Semantic roles & 50–950 ramp

primary

#42408F

secondary

#B0B279

accent

#CE5ACB

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #42408F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →